Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Accounts payable, trade	$ 435	$ 582
Accrued payroll, vacation and other employee expenses	24	31
Unrecognized income from research and development tax credits	132	130
Accrued income taxes	87	87
Dividends payable	1	1
Other accrued expenses	265	458
Accounts payable and accrued expenses, Total	$ 944	$ 1,289